Floor scrubber



FIG. 1 is a perspective view of a floor scrubber, showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. b 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front end view thereof; and,

FIG. 7 is a rear end view thereof. 

The ornamental design for a floor scrubber, as shown and described. 